Trumwine was the only ever Bishop of the Northumbrian see of the Picts, based at Abercorn. Although his previous background is unknown, in 681, during the reign of King Ecgfrith of Northumbria, Trumwine was appointed "Bishop of the Picts" by Theodore of Tarsus, then Archbishop of Canterbury. This was part of a more general division of the Northumbrian church by the Archbishop, who also divided the Bishopric of Hexham from the Bishopric of Lindisfarne. After the defeat and death of Ecgfrith at the Battle of Nechtansmere in 685, Trumwine was forced to flee from his Pictish bishopric, retiring to the monastery at Whitby. It is possible that Trumwine was present at the aforementioned battle, and certainly he would have been a valuable source of advice for Ecgfrith. Whatever the case here, the